def test_has_crossing(self):
line = HighDimLine(np.array([(3., 2), (5., 0)])) # y = -x + 5
line_segment = HighDimLineSegment(
np.array([(3, 0.5), (5, 1.5)])) # y = 0.5 x - 1
# line_points[0] = segpoints[0] = intersection point
line_points = np.array([(4., 1.), (5., 0.)])
self.assertTrue(line.is_on(line_points[0]))
self.assertTrue(line.is_on(line_points[1]))
seg_points = np.copy(line_points)
seg_points[1, 1] = 1.5
self.assertTrue(line_segment.is_on(seg_points[0]))
self.assertTrue(line_segment.is_on(seg_points[1]))
line_val = line.call(np.array([5.]))
np_assert_allclose(0.0, line_val)
np_assert_allclose(line_points[..., -1], line(line_points[..., :-1]))
self.assertTrue(has_crossing(line, line_segment))
